<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button id="btn1">点击我</button>
</body>
<script src="../jquery-3.6.0.min.js"></script>
<script>

    let $btn1 = $("#btn1");
    let btn1 = $btn1[0];

    $("#btn1").click(function() {
        // this：当前的DOM对象（不是JQUERY对象）
        // 如果要获取jquery对象，使用$(this)
        console.log(this);
        console.log($(this) == $btn1);
        console.log(btn1 == this);
    })

</script>
</html>